Question

One exterior angle is 125 degree and interior opposite angles are in the ratioo 1:4.Find the all the angles of triangle

Answer 1

Answer:

let the interior opposite angle be 1x and 4x

then

1x+4x=125

5x=125

x=125/5

x=25

so

1x=25

3x=75

we know that sum of three angle of a triangle is 180

let third angle be a

so

25+75+a=180

100+a= 180

a=80